期刊
CARBOHYDRATE POLYMERS
卷 136, 期 -, 页码 884-891出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.09.111
关键词
Chitosan; Quaternary ammonium; Imidazole; Antioxidant activity; Cathepsin D inhibitor
资金
- Natural Science Foundation of Zhejiang Province of China [Y3110204]
- Technology Planning Project of Zhejiang Province of China [2011C12031]
- National Science Foundation of China [21102129]
- Postgraduate Research Innovation Fund of ZJGSU [3100XJ1514147]
- Food Science and Engineering of the most important discipline of Zhejiang province [JYTsp20142072]
Two (2-hydroxypropyl) trimethyl ammonium and/or imidazole-based quaternary ammonium chitosan derivatives (NHT-chitosan and Im-OHT-chitosan) were synthesized by using nucleophilic substitution reaction. These two synthesized chitosan derivatives were characterized by Fourier transform infrared spectroscopy, NMR spectra, and UV-visible spectra. The applications as antioxidant agents and cathep sin D inhibitors were further investigated. Both of quaternary ammonium chitosan derivatives exhibited good antioxidant activity upon scavenging against hydroxyl radical and hydrogen peroxide as well as the lipid peroxidation inhibition in the linoleic acid emulsion system. They also exhibited good inhibition activity of cathepsin D protease. NHT-chitosan and Im-OHT-chitosan are potential the natural, healthy and safe preservatives in food industry. (C) 2015 Elsevier Ltd. All rights reserved.
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